Friction-clutch.



No- 898,332. PATENTED SEPT. 8, 1908.

H. N. DAVIS.

FRICTION CLUTCH. APPLICATION FILED JA N.18,1908.

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HENRY NELSON DAVIS," OF INDEFENDENOR MISSOURI.

FRICTION-CLUTCH.

no. 898,332. Specification 'or Letters Patent. Patented Sept. s, 1908.

Application filed January 18, 1908. Serial No. 411,406.

To all whom it may concern:

Be it known that I, HENRY NELSON DA- vIs, a citizen of the United States, and a resident of Independence, in the county of J ackson and State of Missouri, have invented a new and Improved Friction-Clutch, of which new and improved friction clutch, which is .slmple and durable in construction, very effective and practically noiseless in operation, and arranged to automaticallyconnect the member with the member to be driven, as long as the driving member rotates in a forward direction, and to immediately and automatically release the-driven member assoon as the forward motion of p the driving member ceases or the drivin member runs in a reverse direction;

The invention consists of novel features and parts and combinations of the same, which will'be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in both views.

Figure 1 is a side elevation of the improvement, parts being in section, and Fig. 2 is a transverse section of the same on the line 22 of Fig. 1.

The dri. g member A is mounted to ro tate loosely on the shaft B, to be driven b the driven member C, fastened on the sha B by the use of a key D ;or other fasteni means. The'driving member A is provide with a pulley E or other means for connecting the driving member A 'th the actuating machinery, to rotate thedriving member. The driving member A fits into a recess 0 formed in one face or side of the driven member C, and in the periphery of the driving member ,A are formed ockets F, each containing a roller G.. he bottom, of each pocket vF is inclined in such a manner that when the driving member A is rotated in the direction of the arrow (1., then the rollers G travel up the inclined bottoms of the POGk-r ets F, to wedge between the pocket bottoms and the wall of the recess C. I Normally or tates in the inverse direction of the arrow (1', the rollers G are in the deep ends of the pockets F and are confined therein, so as to be 231,117 of engagement with the wall of the recess deepest portions thereof are lined with rub ber linings H, which form cushions for the rollers G, to render the friction clutch noiseless.

It is understood that when the driving member A rotates in the direction of the ar-.

when the driving member A is at rest or ro- The bottoms of the pockets F at the row a, the rollers G are thrown outward by centrifugal'force, and in doing so travel up the inclmed bottoms of the pockets F, to

wedge between the said inclined bottoms and V the wall of the recess C. When this takes place the driven member C is .carried along I with the driving member A, and consequently the shaft B is rotated in the direction of the arrowa'; Now when the driving member A ceases to rotate, or is rotated in the inverse direction-of the arrow 0,; then the rollers G travel back into the deep portions of the pockets F, thus disengagin the wall of the recess Oi, whereby the memiers A and C are uncoupled. I

It is expressly understood that the rollers Gia're carried alo by the driving member A, to cause the T01 ers to travel in the elon- \gatedtpockets F by centrifugal force, either .towa'r s the deepest portion or the shallowest portion, accordmg the driving member A is rotated at the time.

Having thus described my invention, I

Patent:

A friction clutch comprising a" driving member having elongated pockets in its periphery, each pocket having an inclined bottom, and a cut-away portion at the deeper end of the pocket, said portion having a cushion of rubber secured therem, the outer face of the rubber beingcontinuous with the surface of the pocket, a driven member hava recess in its face into which fits the driving member, and rollers in the pockets.

ing

In testimony .whereof I havesigned my name to this specification in the presence of two subscribing witnesses.

HENRY NELSON DAVIS.

- .Witnes ses:

G. F. CAMPBELL, GEOQO. GOULD; V

to the direction in which claim as new and desire to secure by Letters I 

